Combined letter-sheet and envelop.



E. MAREN-GOVIGK.'

COMBINED LETTER SHEET AND ENVELOP.

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EDWARD MAREN-COVIGK, OF BUFFALO, NEW YORK.

COMBINE-D LETTER-SHEET AND FNVELOP.

To all whom it may concern Be it known that I, EDWARD MAnEN-Q-owon, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Combined Letter- Sheets and Envelops, of which the following is a specification.

This invention relates to a combined letter sheet and envelop, the object of the invention being to provide an article of this character which may be formed from a single blank of material, the front, rear walls and end flaps of said walls bein adapted to originally occupy a common plane with respect to each other, whereupon. a letter may be written upon one side of the blank, after which the flaps and front and rear walls may be folded to form an envelop adapted for transmission in the ordinary manner through the mail.

A further object of the invention is to provide an article of this character which may be quickly sealed and opened, which when sealed for the transmission of first class mail matter cannot be opened without destroying the envelop, which is provided with gummed surfaces arranged so as to be simultaneously moistened, and which may be fully sealed for the transmission of first class mail matter or partially sealed in envelop form for the transmission of second and third class mail matter.

The invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawings, in which Figure 1 is a rear view of one form of envelop sealed, embodying my invention. Fig. 2 is a plan view of the blank from which the envelop is form-ed. Fig. 3 is a plan view showing the blank partly folded. Fig. tis a section on the line 4: 4: of Fig. 1.

Referring to Figs. 1 to 1 inclusive of the drawings, the envelop is shown as being formed from a single blank of sheet mate rial particularly illustrated in Fig. 2. The blank consists of a front wall 1, a rear wall 2 adapted to occupy a common plane with respect to each other, side flaps 3 and 4 formed upon the wall 1 and side flaps 5 and 6 formed upon the wall 2. The flaps 3 and 5 conjointly are of the same dimensions as Specification of Letters Patent.

Application filed November 8, 19 12.

Patented June 16, 1914.

Serial No. 730,249.

the walls 1 and 2, while the flaps 4 and 6 are of relatively narrower width than the walls 1 and 2 or flaps 3 and 5, although of corresponding length or depth. The wall 2 is coextensive in width and depth with the wall 1, and the flaps 3 and 5 are similarly coextensive in width and depth with the respective walls to which they are attached, while the flaps 1 and 6 are also respectively of the same depth as the walls 1 and 2 and approximately of a width corresponding toone-half the width of said walls 1 and 2. The blank from which the envelop is formed is scored or weakened transversely along the line 7 which separates the walls 1 and 2 and sets the flaps 8 and 5 and 1 and 6 from each other and determines their lines of fold upon each other. The blank is also scored or weakened upon the vertical lines 8, which lines extend the full depth of the blank and are arranged at the intersection of and separate the walls 1 and 2 from the sets of flaps and denote their lines on which the parts are folded in the formation of the envelop. The wall 1 is provided with a sealing tongue 9 gummed upon its inner face, while the flap 3 is provided at its upper edge with a transversely extending tongue 10 and the flap 4; is similarly provided at its upper edge with a transversely extending tongue 11, said tongues 10 and 11 being gummed upon their inner faces as shown, so that when the end flaps are folded back upon the body of the envelop the gummed surfaces of the said tongues 10 and 11 will face in the same direction as the gummed surface of the tongue 9, as will be readily understood.

The construction of the blank above described is such that the flaps 3 and 5 may be turned inwardly along the adjacent line 8 and folded, to lie in parallel relation with the front and rear walls, the flaps d and 6 then turned inwardly along the adjacent line 8 upon the outer faces of the folded flaps 3 and 5 so as to lie parallel therewith, and the rear wall 2 and flaps 5 and 6 folded upwardly upon the rear side of and parallel with the wall 1 and flaps 3 and 4c along the line 7. The gummed surfaces of the tongue 9 and flaps 10 and 11 are thus brought into juxtaposition so that they may be moistened at the same time, after which the flap 11 is secured to the ungummed surface of the flap 10, the latter folded back therewith so as to dispose its gummed surface outward, the .wall 2 and flaps 5 and (S pressed down thereon to secure said flaps 5 and 6 to said flap 10, and the tongue 9 finally turned down upon the outer face of the wall 2 and secured thereto, thus fully sealing the envelop. By this method of sealing the envelop the flaps are not only united to each other, but also are united to the front and rear walls, giving a double sealing effect, so that the envelop cannot be opened without destruction or giving visual evidence of the fact that it has been tampered with. hen the envelop is sealed, divided pockets 12 and 12 are provided between its front and rear walls and the respective flaps, which pockets may be used as containers for articles or matter to be transmitted with the envelop. By this construction powders and other substances or articles of various kinds which should be kept separate may be transmitted without liability of admixture or coming in physical contact, thus enabling articles of such character to be conveniently and safely stored and transmitted through the mail. when it is desired to open the envelop, it is simply necessary to cut through the same on the fold lines of the tongue 9 and sealing flaps l0 and 11, thus separating the walls and flaps in a single operation so that the envelop can be conveniently spread open.

It will, of course, be understood that mat ter may be written upon the inner faces of the front and rear walls and the end flaps, so that upon folding the envelop as above described, said .written matter will be concealed.

I claim A combined letter sheet and envelop comprising front and rear walls adapted to normally occupy a common plane with each other, upper and lower end. flaps at one side of said walls integral therewith and with each other, upper and lower end flaps at the opposite sides of the walls and integral therewith, and with each other, said sets of flaps being coextensive in depth with said walls, said front and rear walls and sets of end flaps being adapted to be folded on a horizontal transverse line to lie in parallel planes and said end flaps to be folded inwardly on vertical lines intersecting said walls to lie in juxtaposition to each other and between said front and rear walls, a gummed flap along the upper edge of the front wall, and gummed flaps at the upper edges of the upper end flaps adapted to be secured to said front wall, said gumn'ied flaps being coextensive in length with the front and rear flaps, whereby the gummed face of one of said gummcd flaps may be secured to the ungummed face of the other gummed flap and turned backward therewith and the folded rear wall and lower end flaps secured to the gummed face of the latter named gummed flap, and whereby divided pockets are provided between the front and rear walls and the folded flaps.

In testimony whereof I ailix my signature in presence of two witnesses.

EDlVARD MAREN-COVICK.

lVitnesses Cimnnns B. GERALD, FRANK J. GILBERT.

Copies of-this patent may be obtained for five cents each, by addressing the Commissioner of I'atents,

Washington, D. C. 

